What is a Vampire Matrix?
326,663
Published 2020-10-31
www.janestreet.com/join-jane-street/info-booth/
Vampire Numbers on Numberphile with James Grime.
• Vampire Numbers - Numberphile
Flammable Math's original tweet:
twitter.com/FlammableMaths/status/1306303462607654…
Robin Houston gets involved:
twitter.com/robinhouston/status/130653990157650329…
Here comes Greg Egan!
twitter.com/gregeganSF/status/1306565923671736320
Robin's tweets about characteristic polynomials and the Cayley-Hamilton theorem. I suggested looking them up and working through the logic yourself. It's straight-forward enough and good fun.
twitter.com/robinhouston/status/130658841500191539…
Robin's code for finding 2 × 2 examples:
gist.github.com/robinhouston/83f0fa99046aeaaf5d27d…
Robin's 3 × 3 monsters. If you can beat them: let us know!
gist.github.com/robinhouston/6c74a607a7ee8d4553fee…
My previous video about log(1+2+3)
• What's the story with log(1 + 2 + 3)?
Behold the pi matrix which squares to give more pi!
[[15,143],[52,936]]
www.wolframalpha.com/input/?i=%5B%5B15%2C143%5D%2C…
CORRECTIONS
- At 07:20 I say 81 when I mean 82. The on-screen number is correct.
- I accidentally say "log troll" instead of "division troll" at 03:38.
- At 03:45 I cross out the wrong 7. Whoops. Gives 117 instead of 171. First spotted by Ryan Parker (no relation).
- I think that's all. Let me know if you spot any more mistakes.
As always: thanks to Jane Street who support my channel. They're amazing.
www.janestreet.com/
And thanks to all my Patreon legends. Your support paid for that cape. Let me know if you have any other video ideas I can use it for.
www.patreon.com/standupmaths
Spoooky wardrobe, make-up, filming and editing by Alex Genn-Bash
Spoooky maths animations by Matt Parker
Extra-spoooky music by Howard Carter
Largely non-spooky design by Simon Wright and Adam Robinson
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
US book: www.penguinrandomhouse.com/books/610964/humble-pi-…
UK book: mathsgear.co.uk/products/5b9fa76f230ffa140094dc43
Nerdy maths toys: mathsgear.co.uk/
All Comments (21)
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Stand up maths: where every thing ever related to maths always circles back to pi
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Nobody: Mathematicians: “Let’s spend hours of our lives and apply linear algebra to troll people!” 🤣🤣👏🏼👏🏼👏🏼
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From now on, any time I want to do something but worry I'll be too embarrassed, I'll remember that Matt Parker turned himself into a fractal Dracula and proudly declared "I'm Fracula!". If Matt can find the bravery to do that, we all can find the bravery to do anything.
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Transforming into a calculator is a really bad ability, at least the bat thing gives you extra mobility, but a calculator? What does that give you? Floating point errors?
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Honestly, I'm most impressed that you can talk so well with fake fangs. You don't sound any different than normal. ...wait a minute
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Omg, I got scared at the end at 11:40.
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My favorite is X² = 25. The 2's cancel... So... X = 5
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Look out, Fracula! You almost touched the silver ratio
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"They did the Maths, the Monster Maths! The Monster Maths, it wasn't done by halfs! The Monster Maths, it gave them ghostly laughs! The Monster Maths, they did the Monster Maths!"
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"This is not going to get too silly." "Before we get too vampirey though.." proceeds to gradually get too vampirey
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I find it amusing that the clip Matt showed of James Grime looked more vampiric than Matt did by the end of the video
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My favorite math troll, is the one feautred in mathloger's video on fermat's last theroem. It goes like this: 3 ^ 2 + 4 ^ 2 = 5 ^ 2 3 ^ 3 + 4 ^ 3 + 5 ^ 3 = 6 ^ 3 but the pattern then stops there. If the pattern had continued, it would probably have been my favorite theroem in math.
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I love how you're always coming up with new version of the channel theme music
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I was so sure that Troll Maths were going to be based on the "One, Two, Many, Lots" number system of the silicon-based trolls on the Discworld
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Your method of reducing fractions is a preferred method of my fifth grade students. They find having to use a common factor too much work and love to just random cancel out numbers. They're not usually so concerned about it yielding the correct answer, though. They get very annoyed when I make them actually find the correct answer.
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I thought the calculator would have displayed « LOW BAT »
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At the very end. Was that Calcula?
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"Pseudo Vampire Number" so.... a Parker Vampire Number?
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"10:35 I wanna say fangs to Jane Street"
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Fun fact: my absolute hatred of the tedium of manual matrix multiplication in highschool and uni inspired me to drop maths and physics and lead me into a career in medicine. Now I spend most of my spare time hating my job and watching maths/physics/rocketry videos wondering what might have been. Fun times.
